N-butane, is an organic compound, the chemical formula is C4H10, is a common alkane, at room temperature and pressure is a colorless, easy to liquefy gas.

Propane is a saturated hydrocarbon organic compound, chemical formula C3H8 belongs to the alkane chemical substances. It is a colorless and tasteless gas at room temperature and pressure, slightly soluble in water, but can be miscible with ethanol, ether and other organic solvents.

Hydrocarbon refrigerants are mainly composed of hydrocarbons and are expected to become an ideal substitute for traditional refrigerants due to their significant advantages in energy saving, environmental protection, refrigeration performance and application range

IG541 gas (52%N2, 40%Ar, 8%CO2) is a gas mixture consisting mainly of nitrogen, argon, and carbon dioxide.